Alexander c



(No Model.)

A. C. LANDRY.

FILTER PRESS.

Patented Sept. 26, 1882.

FIG. 2.

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WITNESSES ATTORNEYS.

' UNITED f STATES PATENT OFFICE.

HIMSELF AND CHARLES LAUGA, OF SAME PLACE.

FILTER-PRESS.

SPECIFICATION forming part of Letters Patent N0. 265,104, datedSeptember 26, 1882. i

l applicati@ fned July 11, ieee. (No modem To all whom it may concern:

Be it known that I, ALEXANDER C. LAN- DRY, of New Orleans, in the parishof Orleans and State of Louisiana, have invented a new and ImprovedFilter-Press; and I do hereby declare that the following is a full,clear, and

exact description of the same, reference being 1 had to the accompanyingdrawings, forming part of this specitication, in which- Figure l is avertical section, Fig. 2 a plan view, Fig. 3 an end view, Fig. 4 anenlarged side view, and Fig.` 5 a cross-section, of one of thefilter-frames; Fig. 6, an enlarged detail of the thimble, showing itsconnection with the perforated plates. Fig. 7 is a detail of the sleeveof cloth passing through the thimble and connecting with the cloths onopposite sides. l My invention relates to a novel constructie offilter-presses, designed more particularly for separating the sirup orjuice from the solid residuum in the manufacture of glucose andgrape-sugar, but applicable also for other purposes, such as oilrening,Src. 1t is an im:

i provement upon that form of filter-press 1n l which a set of separablerectangular frames more fully described with reference tothe drawings,in Which- A represents rectangular frames, which are provided withsupporting-lugs a a, that rest above side rails, B,an`d which frames aremade of equal size and arranged in series, and are forced into closemarginal contact with eachotherbyscrew-rodC,soastoibrmtightjointsbetween, that cons'titnteapractically-closed case. Each of these frames has a partition orwebportion in the middle, formed of two perforated plates,b b, whose outeredges arelet into or fastened to the rectangular fra-mes, which arepreferably made of cypress wood, and which plates are held in place bybeveled strips b. In the middlethe perforated plates have a thimble, c,withcollars or anges c o at each end, against which the perforatedplates b b rest, and which resist the inward pressure on said perforatedplate, and also give a passage-way for the mash to pass from one side ofthe partition to the other. Between the perforated plates b b and aroundthc thimble c is packed the filtering, decolorizin g, and neutralizingcomposition, or any other liltering medium, the said filtering mediumbeing introduced through the opening e at the top of each frame.- rlhedished faces of each frame form, when juxtaposed, chambers f, into whichchambers and through which thimblesc the thick liquor or mash passes,under pressure, from the inlet-pipe d. Before fitting these frames Atogether filter-cloths g are placed over the perforated plates b, andhave a tubular sleeve, g,of the same material, passing through thethimbles. The margins ofthese filter-cloths are allowed to projectbeyondthe edges of the filtering-frames, as shown in Fig. 5, so as toform a packing or gasket for the joint, as well as hold the said clothsin position. At thebottom of each frame there is also a false bottom,formed of slats j, above which is placed a filtering-cloth, lc, toprevent the filtering composition from dropping down into the same, andfrom these false bottoms there emerges a drain-pipe, h, draining into asubjacent pan, on. Now, it will be seen the thick liquor or crude mash,comingV in at the pipe d under pressure, distributes itself through thewhole apparatus, depositing the heavy residuum in the chambersf, formedby the dished faces of the frame, while the pure juices pass through thecloths and the perforated plates b, and, traversing the :filteringcomposition, accumulate in the false bottom below, and are carried offby the drain-pipes. Whenthe heavy residuum in chambersfis to be removedthe pressure of rod C is relaxed,

and the frame A can then be separated and The above specification of myinvention the solid matters dumped out and utilized for signed by me inthe presence of two subscribezittlei'eed, fertilizers, or for otherpurpose. ing witnesses,

Having thus described my invention7 what I Y 5 cla-im as new is- A. C.LANDRY.

The filter-frames A, having filling-openings e, in combination with theperforated plates Witnesses: b, the beveled strips b', the thiinble 0,and the EDWD. W. BYRN, false bottom k, with outlet-pipe, as shown IandSOLON C. KEMON. 1o described.

